Systems and Methods for Use in Computer Network Security

• US 20190327085A1
• Filed: 04/20/2018
• Published: 10/24/2019
• Est. Priority Date: 04/20/2018
• Status: Active Grant

• Current Assignee: Mastercard International Incorporated (MasterCard Incorporated)
• Original Assignee: Mastercard International Incorporated (MasterCard Incorporated)
• Inventors: Patel, Keyur
• Granted Patent: US 10,771,245 B2
• Time in Patent Office: Days
• CPC Class Codes: G06F 21/6209 to a single file or object, e.g. in a secure envelope, encrypted and accessed using a key, or with access control rules appended to the object itself
• CPC Class Codes: G06F 21/6245 Protecting personal data, e.g. for financial or medical purposes
• CPC Class Codes: H04L 2209/42 Anonymization, e.g. involving pseudonyms
• CPC Class Codes: H04L 63/0428 wherein the data content is protected, e.g. by encrypting or encapsulating the payload
• CPC Class Codes: H04L 63/061 for key exchange, e.g. in peer-to-peer networks cryptographic mechanisms or cryptographic arrangements for key agreement H04L9/0838
• CPC Class Codes: H04L 63/062 for key distribution, e.g. centrally by trusted party cryptographic mechanisms or cryptographic arrangements for key distribution involving a central third party H04L9/0819
• CPC Class Codes: H04L 63/12 Applying verification of the received information cryptographic mechanisms or cryptographic arrangements for data integrity or data verification H04L9/32
• CPC Class Codes: H04L 9/085 Secret sharing or secret splitting, e.g. threshold schemes
• CPC Class Codes: H04L 9/0861 Generation of secret information including derivation or calculation of cryptographic keys or passwords
• CPC Class Codes: H04L 9/088 Usage controlling of secret information, e.g. techniques for restricting cryptographic keys to pre-authorized uses, different access levels, validity of crypto-period, different key- or password length, or different strong and weak cryptographic algorithms network architectures or network communication protocols for using time-dependent keys in a packet data network H04L63/068
• CPC Class Codes: H04L 9/0894 Escrow, recovery or storing of secret information, e.g. secret key escrow or cryptographic key storage
• CPC Class Codes: H04L 9/3213 using tickets or tokens, e.g. Kerberos network architectures or network communication protocols for entities authentication using tickets in a packet data network H04L63/0807
• CPC Class Codes: H04L 9/3239 involving non-keyed hash functions, e.g. modification detection codes [MDCs], MD5, SHA or RIPEMD
• CPC Class Codes: H04L 9/50 using hash chains, e.g. blockchains or hash trees
• CPC Class Codes: H04W 12/02 Protecting privacy or anonymity, e.g. protecting personally identifiable information [PII]
• CPC Class Codes: H04W 12/0471 Key exchange

Abstract

Systems and methods are provided for managing data across a network based on multiple keys assigned to different participants in association with the data. One exemplary method includes identifying, by an originating party, a relying party, identifying data relevant to at least one interaction between the originating party and the relying party, and encrypting the data based on a secret. The method also includes generating a key set based on the secret, where the key set has at least three keys and is structured such that the secret is derivable from at least two of the at least three keys, and disseminating a first key of the key set and the encrypted data to a control party and disseminating a second key of the key set to the relying party.

Claims

1. A computer-implemented method for use in managing data across a network based on multiple keys assigned to different participants in association with the data, the method comprising:

identifying, by an originating party, a relying party;

identifying data relevant to at least one interaction between the originating party and the relying party, the data including identifying data specific to the originating party;

encrypting, by a computing device, the data based on a secret;

generating, by a computing device, a key set based on the secret, the key set having at least three keys and structured such that the secret is derivable from at least two of the at least three keys;

disseminating, by the computing device, a first key of the key set and the encrypted data to a control party; and

disseminating, by the computing device, a second key of the key set to the relying party, whereby the relying party is permitted to submit a request to the control party, including the second key, and whereby the control party is permitted to decrypt the encrypted data disseminated to the control party, using the first and second keys, in order to respond to the request from the relying party.

2. The computer-implemented method of claim 1, wherein generating the key set includes generating the key set based on the secret and a Shamir secret sharing algorithm.

3. The computer-implemented method of claim 2, further comprising generating a token and associating the token with the key set, prior to disseminating the first key and the second key;

and

wherein disseminating the first key an the encrypted data to the control party includes disseminating the first key, the encrypted data, and the token to the control party; and

wherein disseminating the second key to the relying party includes disseminating the second key and the token to the relying party.

4. The computer-implemented method of claim 2, wherein the identifying data includes a government ID number associated with the originating party;

and

wherein the request includes a request for a credit score.

5. The computer-implemented method of claim 1, further comprising:

receiving the request from the relying party, the request including the second key of the key set;

retrieving, by a second computing device associated with the control party, the first key from memory associated with the second computing device;

deriving, by the second computing device, the secret from the first and second keys; and

decrypting, by the second computing device, the encrypted data disseminated to the control party based on the derived secret.

6. The computer-implemented method of claim 5, further comprising transmitting, by the second computing device, a reply to the relying party in response to the request, the reply based on the encrypted data as decrypted by the second computing device but not including the actual encrypted data.

7. The computer-implemented method of claim 1, further comprising:

storing a third key of the key set in memory of the computing device; and

transmitting, by the computing device, a request to the control party to modify and/or confirm the encrypted data disseminated to the control party, the request including the third key, whereby the control party is permitted to decrypt the encrypted data using the first and third keys in order to modify and/or confirm the encrypted data based on the request from the originating party.

8. The computer-implemented method of claim 1, further comprising generating, by the computing device, the secret prior to encrypting the data based on the secret.

9. A system for use in managing data across a network based on multiple keys assigned to different participants in association with the data, the system comprising an originating party computing device having a memory and a processor coupled to the memory, the processor configured, by executable instructions stored in the memory of the originating party computing device, to:

receive, from an originating party, an indication of a relying party in connection with an identification interaction of the originating party to the relying party;

encrypt data based on a secret, the data including identifying data specific to the originating party;

generate a key set based on the secret and store the key set in the memory, the key set having at least three keys and structured such that the secret is derivable from at least two of the at least three keys;

generate a token associated with the originating party, the encrypted data and/or the key set;

disseminate the token, a first key of the key set, and the encrypted data to a control party; and

disseminate the token and a second key of the key set to the relying party, whereby the relying party is permitted to submit a request to the control party, including the token and the second key, and whereby the control party is permitted to identify the first key based on the token and decrypt the encrypted data disseminated to the control party, using the first and second keys, in order to respond to the request from the relying party.

10. The system of claim 9, where in the processor of the originating party computing device is further configured, by the executable instructions, to generate the secret prior to encrypting the data based on the secret.

11. The system of claim 10, wherein the processor of the originating party computing device is configured, by the executable instructions, in connection with generating the key set, to generate the key set based on the secret and a Shamir secret sharing algorithm.

12. The system of claim 9, wherein the processor of the originating party computing device is further configured, by the executable instructions, to store a third key of the key set in the memory of the originating party computing device.

13. The system of claim 12, further comprising a control party computing device associated with the control party, the control party computing device having a memory and a processor coupled to the memory, the processor of the control party computing device configured, by executable instructions stored in the memory of the control party computing device, to:

receive the request from the relying party, the request including the second key of the key set;

retrieve, from the memory of the control party computing device, the first key disseminated to the control party by the processor of the processor of the originating party computing device;

derive the secret from the first and second keys; and

decrypt the encrypted data based on the derived secret; and

transmit a reply to the request to the relying party, the reply including decrypted data and/or data accessible based on the decrypted data.

14. The system of claim 13, wherein the request includes at least one of a name, address, phone number and birthdate of the originating party;

and

wherein the control party computing device is configured to verify the identity of the originating party based on the decrypted data and the at least one of the name, address, phone number and birthdate of the originating party, prior to transmitting the reply to the request to the relying party.

15. The system of claim 14, wherein the reply transmitted to the relying party includes at least some of the encrypted data but does not include all of the encrypted data.

16. The system of claim 13, wherein the processor of the originating party computing device is further configured, by the executable instructions stored in the memory of the originating party computing device, to transmit a request to the control party to modify and/or confirm the encrypted data disseminated to the control party, the request including the third key.

17. The system of claim 16, wherein the processor of the control party computing device is further configured, by the executable instructions stored in the memory of the control party computing device, to decrypt the encrypted data using the first and third keys and to modify and/or confirm the encrypted data based on the request from the processor of the originating party computing device.

18. A non-transitory computer-readable storage media including executable instructions for use in managing data across a network based on multiple keys assigned to different participants in association with the data, which, when executed by at least one processor, cause the at least one processor to:

identify a relying party;

encrypt data based on a secret, the data including identifying data specific to the originating party;

generate a key set based on the secret and a Shamir secret sharing algorithm, the key set having N keys and structured such that the secret is derivable from at least N−

1 of the N keys, where N is an integer greater than 2;

disseminate a first key of the key set and the encrypted data to a control party; and

disseminate a second key of the key set to the relying party, whereby the relying party is permitted to submit a request associated with the data to the control party, including the second key, and whereby the control party is permitted to decrypt the encrypted data disseminated to the control party, by use of the first and second keys, in order to decrypt the encrypted data and to respond to the request from the relying party.

19. The non-transitory computer-readable storage media of claim 18, wherein the executable instructions, when executed by the at least one processor, further cause the at least one processor to:

generate a token and associate the token with the key set, prior to disseminating the first key and the second key;

disseminate the token along with the first key and the encrypted data to the control party; and

disseminate the token along with the second key to the relying party.